Bottle-stopper



No. 749,063. PATBNTED JAN. 5, 1904.

E. G. HowB.

BOTTLE STOPPER.

` APPLICATION FILED DEO. 6, 1902.

N0 MODEL.

UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent No. 749,063, dated January5, 1904.

' Application filed December 6, 1902. Serial No. 134,075. (No model.)

To all whom it may concern:

Be it known that I, ELBRIDGE G. HOWE, a citizen of the United States,residing at Millbury, in the county of Worcester and Oommonwealth ofMassachusetts, have invented a new and useful Improvement inBottle-'Stop pers, of which the following is a specification',accompanied by drawings forming a part of y the same, in which- Figure 1is a' perspective view of the neck of a bottle with a glass stopper anda metallic retaining-cap applied thereto embodying my invention. Fig. 2is a perspective view of the mouth of a bottle with its glass stopper,the metallic retaining-cap having been removed. Fig. 3 is a perspectiveview of the neck of a bottle with the glass stopper and metalliccapremoved and showing the annular ground surface around the mouth ofthe bottle. Fig. 4 is a perspective view of the glass stopperinverted,showiug its under side; and Fig. 5 is a central verticalsectional view representing the neck of a bottle with its glass stopperand metallic cap applied thereto.

Similar reference-gures refer to similar parts in the different views.

The object of my present invention is to provide a hermetically-sealedglass bottle or similar vessel without the employment of other materialfor the purpose of rendering the joint of the stopper air-tight, therebyenabling the contents of the vessel to be preserved hermetically sealedunder absolute sanitary conditions; and my invention consists in theconstruction and arrangement of parts', as hereinafter described, andset forth in the annexed claims.

Referring to the accompanying drawings, 1 denotes the upper portion orneckof a glass bottle provided with a glass stopper 2 and a metallicretaining-cap 3, by which the stopper is retained in position. Thestopper 2, which is shown in inverted perspective viewin Fig. 4,consists of a circular glass disk having on its under side a rib 4 withaflat surface 5 and having its upper side slightly conical, as at 6, andprovided with a series of notches or radial slots 7. The neck ofthe'bottleis of sufficient thickness to provide a flat surface 8 aroundthe mouth of the bottle and lying in a plane substantially at rightangles with the axis of the bottle. The fiat surfaces 5 for theengagement of the cap with. the ro- 1 tating mechanism. The rib 4limitsthe area to be ground to an annular surface corresponding substantiallywith the annular surface 8 on the bottle and leaving the cap whenapplied to the bottle free to slide laterally in i any direction, butforming an air-tight joint between the ground surfaces 5 and 8 withoutthe employment of a gasket or other compressible packing material.

The stopper 2 when applied to the bottle is held in place by means of ametallic retaining-cap 3, which consists of a ring provided with aninternal screw-thread adapted to engage a screw-thread 9, formed on theoutside of the neck of the bottle and having its top 10 overlapping theedge of the glass stopper 2. The retaining-cap 3 is providedwith acentral hole 1l, which receives the apex of the conical surface 6. Themetallic cap 3 is provided on its periphery with a series of spurs l2,adapted to be engaged by a Spanner, whereby the cap is lrotated anddrawn down by the screw-thread 9, thereby pressing the edge 13 of thecap against the conical surface 6 of the stopper. The hole ll in themetallic cap, in connection with the conical surface on the stopper,serves to center the stopper on the neck of the bottle, and by applyingthe pressure of the retaining-cap 3 at the edge 13 I obtain a yieldingpressure against the cap, which-allows the cap to be rotated slightlyafter the edge 13 has been brought into contact with the conical surfaceof the stopper, and as the yielding pressure of the cap against thestopper is received by the screw-thread 9 on the neck of the bottle thecap is frictionally held vagainst accidental displacement. The removalof the metallic retaining-cap releases the glass stopper, which can bereadily pushed to one side and removed from the bottle.

It has been customary heretofore to apply moved with diiculty.

What I claim as my invention, and desire to secure by Letters Patent,is-.

1. The colnbination with a vessel having an annular ground surfacesurrounding its mouth, of a glass stopper, consisting of a circular diskhaving on its under side a projecting annular rib corresponding to theannular ground surface on said vessel and provided with a groundsurface, substantially as described.

2. The combination of a vessel and a cover seated upon the mouth of thevessel and having a conical projection on its upper surface, and aretaining-cap having a central hole to receive said conical surface andmeans for attaching said cap to the vessel, substantially as described.

3. The combination with a vessel having an annular ground surfacesurrounding its mouth, of a glass stopper consisting of a disk providedwith an annular projecting rib on its under side having a ground surfacecorresponding to the annular ground surface of said vessel and means forretaining said disk on the vessel, with their ground surfaces incontact, substantially as described.

4. The combination with a glass vessel having an annular ground surfacearound its mouth lying in a plane substantially at right angles with theaxis of the vessel, a glass cap having a rib with a ground facecorresponding with the ground su rface on the vessel and having aconical upper surface, a metallic cap inclosing said stopper and meansfor engaging said cap and the vessel, substantially as described.

5. The combination with a glass vessel, of a glass stopper, said stopperand vessel having plane contacting ground surfaces lying substantiallyin a plane at right angles with the axis of the vessel, said stopperhaving a conical top, a metallic cap overlapping said stopper and havinga central hole to receive the conical top of the stopper and means fordrawing said cap against the stopper, substantially as described.

Dated this lst day of December, 1902.

ELBRID GE G. HOWE.

Witnesses:

RUFUs B. FowLER, PENELoPE COMBERBACH.

